first commit

application/helpers/SAV_url_helper.php

@@ -0,0 +1,20 @@
+<?php
+
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+if ( ! function_exists('site_url'))
+{
+	/**
+	 * Remove querystring var
+	 *
+	 * @param	string	$uri
+	 * @param	string	$key
+	 * @return	string
+	 */
+	function remove_querystring_var($url, $key) { 
+        $url = preg_replace('/(?:&|(\?))' . $key . '=[^&]*(?(1)&|)?/i', "$1", $url);
+        $url = rtrim($url, '?');
+        $url = rtrim($url, '&');
+        return $url;
+    }
+}